.js

const Promise = require('bluebird');
const memcache = require('./memcached.js');

const lifetime = 100 // i don't actually know what this is.. fill in the correct thing :p

Promise.try(() => {
    return memcache.add('foo', 'bar', lifetime);
}).then(() => {
    return memcache.get('foo');
}).then((foo) => {
    console.log(foo) // should be 'bar' i imagine...
})

memcached.js

const Promise = require('bluebird');
const Memcached = require('memcached');
const memcached = new Memcached('memcacheserver:11211');

Promise.promisifyAll(memcached);

memcached.on('issue', details => console.log('issue: ', details))
memcached.on('failure', details => console.log('failure: ', details))
memcached.on('reconnecting', details => console.log('reconnecting: ', details))
memcached.on('reconnect', details => console.log('reconnect: ', details))
memcached.on('remove', details => console.log('remove: ', details))

const Cache = {}

Cache.add = function (key, value, lifetime) {
    return memcached.setAsync(key, value, lifetime);
};

Cache.get = function (key) {
	return memcached.getAsync(key)
};


module.exports = Cache;